Radionuclide diffusion into undisturbed and altered crystalline rocks
Radionuclide diffusion into undisturbed and altered crystalline rocks
复制标题
放射性核素扩散到未受干扰和蚀变的结晶岩石中
作者：
V. Havlová;P. Večerník;J. Najser;K. Sosna;K. Breiter
摘要从捷克共和国波希米亚地块的45个花岗岩样品中获得了大量的孔隙度ε、有效扩散系数De和导水率K数据。测量的数据集可用于确定用于深（>400米）放射性废物处置库安全评估计算的数据的参数范围，即使样本来自较浅的深度（<108米）。该数据集还可用于其他目的，例如评估花岗岩中污染物的迁移情况（例如来自浅层中级放射性废物处置库和化学废物处置库）。在研究中应考虑样品的弛豫和老化过程，否则在将实验室结果与原位测定结果进行比较时可能会高估迁移参数。
Abstract An extensive set of porosity, ε, effective diffusion coefficient, De, and hydraulic conductivity, K, data were obtained from 45 granitic samples from the Bohemian Massif, Czech Republic. The measured dataset can be used to define parameter ranges for data to be used in safety assessment calculations for a deep (>400 m) radioactive waste repository, even though the samples originated from shallower depths (<108 m). The dataset can also be used for other purposes, such as evaluating the migration of contaminants in granitic rock (e.g. from shallow intermediate-level radioactive waste repositories and chemical waste repositories). Sample relaxation and ageing processes should be taken into account in research otherwise migration parameters might be overestimated in comparisons between lab results and those determined in situ.